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SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '2290eaaf5729cd838eda65aa844f86dca8ad10e0541016b0a1ae235c18e0f721' 
  AND token = 'DktLha156quVQMx+xFuBpED186X2tWE9V7Mnm89r5pY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}